1/*-
2 * Copyright (c) 2011-2012 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Christos Zoulas.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#ifndef _NPF_VAR_H_
31#define _NPF_VAR_H_
32
33#define	NPFVAR_STRING		0
34#define	NPFVAR_IDENTIFIER	1
35#define	NPFVAR_VAR_ID		2
36#define	NPFVAR_NUM		3
37#define	NPFVAR_PORT_RANGE	4
38
39/* Note: primitive types are equivalent. */
40#define	NPFVAR_PRIM		NPFVAR_PORT_RANGE
41#define	NPFVAR_TYPE(x)		(((x) > NPFVAR_PRIM) ? (x) : 0)
42
43#define	NPFVAR_TABLE		5
44#define	NPFVAR_FAM		6
45#define	NPFVAR_PROC		7
46#define	NPFVAR_PROC_PARAM	8
47#define	NPFVAR_TCPFLAG		9
48#define	NPFVAR_ICMP		10
49#define	NPFVAR_INTERFACE	11
50#define	NPFVAR_PROTO		12
51
52#ifdef _NPFVAR_PRIVATE
53static const char *npfvar_types[ ] = {
54	[NPFVAR_STRING]		= "string",
55	[NPFVAR_IDENTIFIER]	= "identifier",
56	[NPFVAR_VAR_ID]		= "variable-id",
57	[NPFVAR_NUM]		= "number",
58	[NPFVAR_PORT_RANGE]	= "port-range",
59	[NPFVAR_TABLE]		= "table",
60	[NPFVAR_FAM]		= "family-address-mask",
61	[NPFVAR_PROC]		= "procedure",
62	[NPFVAR_PROC_PARAM]	= "procedure-parameter",
63	[NPFVAR_TCPFLAG]	= "tcp-flag",
64	[NPFVAR_ICMP]		= "icmp",
65	[NPFVAR_INTERFACE]	= "interface-address",
66	[NPFVAR_PROTO]		= "proto",
67};
68#endif
69
70struct npfvar;
71typedef struct npfvar npfvar_t;
72
73npfvar_t *	npfvar_create(void);
74npfvar_t *	npfvar_create_element(unsigned, const void *, size_t);
75npfvar_t *	npfvar_create_from_string(unsigned, const char *);
76npfvar_t *	npfvar_lookup(const char *);
77const char *	npfvar_type(size_t);
78void		npfvar_add(npfvar_t *, const char *);
79npfvar_t *	npfvar_add_element(npfvar_t *, unsigned, const void *, size_t);
80npfvar_t *	npfvar_add_elements(npfvar_t *, npfvar_t *);
81void		npfvar_destroy(npfvar_t *);
82
83char *		npfvar_expand_string(const npfvar_t *);
84size_t		npfvar_get_count(const npfvar_t *);
85int		npfvar_get_type(const npfvar_t *, size_t);
86void *		npfvar_get_data(const npfvar_t *, unsigned, size_t);
87
88#endif
89